WO2018159931A1

WO2018159931A1 - Structure of guardrail rotating body

Info

Publication number: WO2018159931A1
Application number: PCT/KR2017/013972
Authority: WO
Inventors: 유준령
Original assignee: (주)카리스가드레일; 유준령
Priority date: 2017-02-28
Filing date: 2017-12-01
Publication date: 2018-09-07
Also published as: KR101765744B1

Abstract

The present invention relates to a structure of a guardrail rotating body, which is mounted on a shaft and rotates. This rotating body structure comprises an axial hole pipe rotatably mounted on a vertical shaft, and an inner cylinder and an outer cylinder, which are coaxial. The plastic inner cylinder is connected to a plurality of buffer ribs extending from the pipe, and includes a plurality of first protrusions protruding radially outwards and fitting grooves formed between the first protrusions adjacent to each other. The outer cylinder is integrally formed on the outer side of the inner cylinder, and is a soft outer cylinder including a plurality of second protrusions protruding axially inwards to be tightly inserted into the fitting grooves. According to an embodiment, the inner cylinder and the outer cylinder are configured to be spaced apart via an intermediate layer disposed therebetween, and may be configured to be integrally coupled through an operation of the outer cylinder by an impact from the outside.

Description

Guardrail Rotator Structure

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates primarily to protective guardrails erected on roads for vehicle traffic, and more particularly to a structure of a rotating body constituting a rotary guardrail.

In general, guardrails are facilities installed along roads or roadsides to indicate road boundaries and to prevent departure of vehicles. Such a guard rail needs to have a high impact strength to prevent the vehicle from falling off when the vehicle collides, while simultaneously requiring a property that can absorb the shock applied to the vehicle and the guard rail. This demand is particularly concerned with the protection of drivers and occupants.

Traditionally, guardrails are metal or plastic plates that are formed long transversely in a curved form in the up and down directions, and are arranged and fixed in the transverse direction to rail posts arranged at appropriate intervals along the road. On the other hand, in recent years, the body is inserted into the post in the axial direction is rotated continuously arranged a lot of cases forming a protective guard rail. The present invention relates to a structure of a rotating body, ie, the rotating body, which constitutes the latter guard rail.

Looking at the structure of the conventional guardrail rotating body, as described in the Patent Publication No. 10-1003368, the rotating body itself may be a buffer material at all, but generally has a structure filled with a shock absorber inside the cylinder. For example, Korean Utility Model Publication No. 20-0265893 discloses that urethane is filled inside a waste tire, and Japanese Utility Model Publication Nos. 20-0336628 and 20-0391872 are filled with urethane in a plastic barrel. Patent Publication No. 10-0740552 discloses that styrofoam is filled in a rubber container.

For example, in Fig. 1, reference numeral 1 denotes a barrel and reference numeral 2 denotes an internal filler.

Of course, in this case, as described in each publication, there will be an effect of preventing breakage or corrosion due to external exposure of the filling and buffering material. On the other hand, however, 1) the canister (1) is turned away from the filler (2) depending on the heterogeneous nature of the filler and the outer cylinder, so that the filler cannot effectively absorb external impacts, and 2) simply depends on the physical properties of the material. The buffering efficiency is lowered, and 3) there is a problem of not actively responding to external shocks.

In particular, when the external impact is applied to the guardrail structure, the rotor itself is easily destroyed, and in this case, 4) the fragments of the destroyed guardrail rotor are scattered and scattered in all directions, resulting in the second and third additions. Damage is likely to occur. Thus, in reality, structural improvements are urgently needed so that the impacted guardrail does not generate possible debris, but no countermeasures have been taken.

The present invention is proposed to solve the above problems of the prior art. An object of the present invention is to provide a guard rail rotating structure that can effectively absorb an external impact as a rotating body for the guard rail, and can be actively buffered against the external impact. Another object of the present invention is to provide a guardrail rotating body structure configured such that fragmentation of the guardrail due to the impact is not generated as much as possible.

The guardrail rotating body structure of the present invention is based on a guardrail rotating body mounted on a shaft.

The rotating body structure is:

An axial hole pipe rotatably mounted on a vertical axis;

A plastic inner cylinder coaxially disposed on an outer side of the pipe and connected to a plurality of buffer ribs extending from the pipe, the plastic inner cylinder including a plurality of first radially outwardly extending protrusions and a fitting groove formed between the first protrusions adjacent to each other;

A soft outer cylinder which is integrally formed on an outer side of the inner cylinder and includes a plurality of second protrusions which are in close contact with the fitting groove in one-to-one correspondence in the axial direction;

It includes.

Preferably, the rib is formed in a curved shape bent in the rotation direction.

Preferably, the rotor has a structure:

An intermediate layer connecting the end portions of the first protrusion and the second protrusion to be offset from each other such that when the inner cylinder and the outer cylinder are coaxially disposed, the end portions of the second protrusion are located at the inlet of the fitting groove;

It is made to include more,

When an external impact is applied to the outer cylinder, the intermediate layer is broken and the second protrusion is forcibly inserted into the fitting groove between the first protrusions, and the impact is alleviated by the frictional resistance continuously provided in the insertion process.

It is composed.

In the above preferred embodiment, the inner cylinder is:

Shock-absorbing synthetic resin foam filled in the fitting groove of the first protrusion;

It further comprises.

According to the guardrail rotating body structure of the present invention, the flexible outer cylinder and the hard inner cylinder are engaged with each other by the mutual correspondence of the first protrusion and the second protrusion to always rotate together. When an external shock is applied to the outer cylinder, the shock is absorbed by the outer cylinder and at the same time, it is dispersed by the inner and outer cylinder rotational force, and the inner buffer is buffered again by the rib. On the other hand, even when the plastic inner cylinder is broken by the impact, the fragments are almost integrally attached to the rubber outer cylinder.

Therefore, the applied shock can be absolutely alleviated, and there is an effect that the possibility of generating a guardrail fragment after the impact can be significantly reduced.

In a preferred example, when an external impact is applied to the outer cylinder, the intermediate layer is broken so that the second protrusion is forcibly inserted into the fitting groove between the first protrusions. In addition, since the impact can be further mitigated by the friction resistance and foam elasticity that are continuously provided in the insertion process, it is more effective in absorbing and mitigating impact. Of course, in this case as well, there is an effect that the likelihood of occurrence of the guardrail fragment after the impact is significantly reduced.

1 is a cross-sectional view of a conventional guardrail rotating body.

2 is a perspective view of a guardrail rotating structure according to an embodiment of the present invention.

3 is an exploded perspective view of FIG. 2;

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view of a guardrail rotating structure according to another embodiment of the present invention.

6 is a partially enlarged view of FIG. 5;

7 is a view for explaining the operation of FIG.

[Description of the code]

10. Guardrail Rotator Structure

11. Shaft pipe

12. Inner barrel

13. Outer

13a. Photoluminescent layer

14. Rib

15. The first stone

16. Fitting groove

17. The second stone

18. Home

19a, 19b. cap

20. Aerator

21.Middle layer

22. Foam

23. Friction Projection

Features and effects of the present invention guardrail rotating structure (hereinafter, referred to as 'rotating body structure') described above or will not be more apparent through the description of the embodiments described with reference to the accompanying drawings. In the drawings below, the rotor structure according to the invention is indicated by reference numeral 10.

2 to 4, the rotating body structure 10 of the present invention is based on the rotating body for the guard rail mounted on the axis (X) to rotate. This rotating body structure 10 is arranged in close proximity to form a so-called 'roller' or 'cylindrical' guard rail and installed in the necessary place of the road to guide the normal operation of the vehicle, while absorbing and treating the impact in the event of a collision It is an important protective function to protect the occupants.

In the present invention, the rotor structure 10 is a cylindrical structure rotatably mounted on the vertical axis (X), the axial hole pipe (11) formed in the center, the inner cylinder 12 and the outer cylinder are arranged coaxially in the outer side of the pipe (13), and preferably further include caps (19a, 19b) covering the upper and lower sides of the outer cylinder (13).

Specifically, the inner cylinder 13 is coaxially disposed on the outside of the pipe 11 and connected to a plurality of buffer ribs 14 extending from the pipe 11, the plurality of first protrusions radially outward from the outer surface thereof. And a fitting groove 16 formed between the first protrusion 15 adjacent to each other. Preferably, the rib 14 is formed of a curved rib bent in the rotational direction, which is effective in resiliently relieving an external impact on the rotor structure 10. In this embodiment, the rib 14 is formed of two stages of curved ribs.

Preferably, the pipe 11 and the inner cylinder 13 are integrally formed, including the ribs 14. In this case, as the material of the inner cylinder 13, a plastic resin that can withstand the external impact of the rotor structure 10 is used, and PA is known to have a strength enough to be used as an interior / exterior component of an automobile. Engineering plastic resin (E-PVC) selected from PC, POM (polyacetyl), PBT (polybutylene terephthalate), MPPO (modified polyphenylene oxide), PET is applied.

The outer cylinder 13 is formed coaxially and integrally on the outer side of the inner cylinder 12, and includes a plurality of second protrusions 17 that are in close contact with the fitting groove 16 in one-to-one correspondence inwardly from the inner surface thereof. Is done. As the material of the outer cylinder 13, a soft and preferably rubber resin is used in order to provide frictional resistance for smooth rotation of the rotating body structure 10 when impacting, thereby making it easy to manufacture the rotating body structure 10. Of course, by absorbing the external impact elastically and at the same time enable the elastic expansion of each second protrusion 17 in the fitting groove 16, the impact is evenly distributed in all directions, such as vertical, horizontal, diagonal.

In addition, due to the frictional resistance of the rubber disposed on the outside it can be buffered while the rotor structure 10 rotates smoothly, for example, when the outer cylinder 13 and the inner cylinder 12 due to the protrusion coupling structure of the outer cylinder The shock is dispersed and remarkably alleviated while (13) does not turn and always rotates with the inner cylinder 12. Although not described in detail, it will be apparent that in this structure, a fitting groove is formed between the second protrusions 17 and the first protrusions 15 are inserted therein.

In the drawing, reference numeral 13a is a color photoluminescent layer applied to the surface of the outer cylinder 13, and various colors are applied to provide aesthetics to the vehicle driver during the day by applying aesthetic treatment, and the road does not use electric energy by emitting light at night. It has the advantage of shining brightly. Numeral 18 is a longitudinal groove formed on the surface of the outer cylinder 13 in order to further increase the rotational frictional resistance of the rotor structure 10.

On the other hand, the fitting groove 16 includes a friction protrusion 23 formed on the inner wall. This friction protrusion 23 configuration provides a strong frictional resistance to the rubber material second protrusion 17, while suppressing the force from being shot in the opposite direction, while the second protrusion 17 is fitted with the fitting groove 16. Make sure it is firmly placed on the inner wall of the

The

caps

19a and 19b are provided on the upper and lower portions of the rotor structure 10 to cover the upper and lower sides of the outer cylinder 13, and in a state of being exposed to the outside for a long time, the water inside the rotor structure 10 Since it is easy to generate moisture, in order to prevent this, the lower hole 19b is provided with a ventilation hole 20.

Second Embodiment

The above embodiment illustrates that the inner cylinder 12 and the outer cylinder 13 are integrally provided by coupling the

protrusions

15 and 17. In the present embodiment, the inner cylinder 12 and the outer cylinder 13 are configured to be spaced apart, the outer cylinder 13 by the external impact to operate the inner cylinder 12 side is configured to be integrally combined in the same state as the above embodiment. Shows.

5 and 6, when the inner cylinder 12 and the outer cylinder 13 are coaxially arranged, the end of the second protrusion 17 has the fitting groove 16. It further comprises an intermediate layer 21 which connects the end portions of the first protrusion 15 and the second protrusion 17 so as to be positioned at the entrance. When an external shock is applied to the outer cylinder 13 in this state, the intermediate layer 21 is broken and the second protrusion 17 is forcedly inserted into the fitting groove 16 between the first protrusions in a one-to-one correspondence. This insertion process is made of the rotating body between all the second protrusion 17 and the fitting groove 16 while the structure 10 rotates, the impact is significantly relieved by the friction resistance continuously provided.

In this embodiment, the intermediate layer 21 connects the ends of the first protrusions 15 and the second protrusions 17 between the inner cylinders 12 and the outer cylinders 13 which are coaxially arranged. ) Are integrally formed. Specifically, when the inner cylinder 12 and the outer cylinder 13 are coaxially disposed, the intermediate layer 21 may include the first protrusion 15 such that the end of the second protrusion 17 is positioned at the inlet of the fitting groove 16. ) And the end portions of the second protrusions 17 are connected to each other with a gap.

In the figure, the intermediate layer 21 is shown as one layer in which the ends of the first and

second protrusions

15 and 17 contact the inner and outer surfaces, respectively. It can be understood as a single line extending from the edges of the first protrusions 15 and the second protrusions 17 in contact between the edges of the respective ends.

For example, if each end of the first protrusion 15 and the second protrusion 17 has a 'V' shape, the intermediate layer 21 may form a continuous 'V' waveform line. However, considering that the rotating body structure 10 rotates in response to an impact and the second protrusion 17 is a flexible rubber, it can be inserted into the fitting groove 16 even if it is not completely numerically accurate. In this case, the shape of the intermediate layer 21 will not be limited.

In order to further relieve impact, the rotating body structure 10 of the present embodiment further includes a shock-absorbing synthetic resin foam 22 in the form of a foam filled in the fitting groove 16 of the inner cylinder 12. . Structurally, the foam 22 elastically supports the adjacent first protrusions 15 on the left and right sides, in addition to elastically absorbing the shock transmitted therefrom correspondingly to the front end of the second protrusion 17. Play a role. Preferably, the foam 22 is a conventional polyethylene molded foam.

In addition, the fitting groove 16 includes a friction protrusion 23 formed on the inner wall. This friction protrusion 23 configuration provides a stronger frictional resistance to the second protrusion 17, while suppressing a force that is shot in the opposite direction, while the second protrusion 17 and the foam 22 are fitted. It is to be firmly arranged on the inner wall of the groove (16).

Referring to FIG. 7, when an external impact to the rotor structure 10 is applied to the outer cylinder 13, the second protrusion 17 is forcibly inserted into the fitting groove 16 while the intermediate layer 21 is broken. The shock is alleviated by the frictional resistance between the second protrusion 17 and the fitting groove 16, the elastic response by the foam 22, the resistance by the friction protrusion 23, and the like. will be.

And when the second protrusion 17 is rotated while being inserted in a one-to-one correspondence to the fitting groove 16, the overall rotor structure 10 is as shown in the state of Figure 4, as described above, the material The outer cylinder 13 elastically absorbs the impact on the surface and at the same time, each second protrusion 17 elastically expands in the fitting groove 16 so that the impact is evenly distributed in all directions such as vertical, horizontal, and diagonal lines. Finally, it is buffered by the curved ribs 14. According to this embodiment, the effect of alleviating or dispersing external shocks is further enhanced.

On the other hand, in any of the embodiments, the second protrusion 17 is pressed in the fitting groove 16 at the same time as the impact mitigation operation is maintained more tightly coupled. Therefore, even if the rotor structure is damaged due to the impact, the degree of fragmentation and scattering is significantly smaller than that of the case where it is destroyed and scattered, so that the second and third damages caused by the damage can be prevented. It can be.

Claims

In the rotating body structure for the guard rail mounted on the shaft,

The rotor structure 10 is:

An axial hole pipe 11 rotatably mounted on the vertical axis X;

A plurality of first protrusions 15 coaxially disposed on the outside of the pipe 11 and connected to a plurality of buffer ribs 14 extending from the pipe 11 and radially outward, and the first protrusions adjacent to each other; A plastic inner cylinder (12) comprising fitting grooves (16) formed between (15);

A soft outer cylinder 13 formed integrally with the outer side of the inner cylinder 12 and including a plurality of second protrusions 17 which are in close contact with the fitting groove 16 in one-to-one correspondence in the axial direction;

Including;

The fitting groove 16, including a friction protrusion 23 formed on the inner wall;

Guardrail rotating body structure characterized in that.
The method of claim 1, wherein:

The rib 14 is formed in a curved shape bent in the rotational direction to provide a resilient guardrail structure.
The method of claim 1,

The inner cylinder 12 is formed of an engineering plastic resin (E-PVC) selected from PA, PC, POM (polyacetyl), PBT (polybutylene terephthalate), MPPO (modified polyphenylene oxide), and PET. Guard rail rotating body structure.
The method of claim 1,

The outer cylinder 13 is a guardrail rotating structure characterized in that formed of a rubber material that provides a frictional resistance for smooth rotation during impact.
The method of claim 1,

The outer cylinder (13) is characterized in that it comprises a longitudinal longitudinal groove (18) formed in the surface of the outer cylinder (13) to further increase the frictional resistance of the rotor structure (10).
The method of claim 1,

The outer cylinder 13 is applied to the surface of the guardrail rotating body structure, characterized in that it includes a color photoluminescent layer (13a) that can brighten the road even without the use of electrical energy by improving visibility in daytime and light at night .
The method of claim 1,

The rotor structure 10 includes a cap (19a, 19b) provided on the upper and lower portions to cover the upper and lower sides, the guard characterized in that the vent hole 20 is formed on the surface of the lower cap (19b) Rail rotator structure.
In the rotating body structure for the guard rail mounted on the shaft,

The rotor structure 10 is:

An axial hole pipe 11 rotatably mounted on the vertical axis X;

A plurality of first protrusions 15 coaxially disposed on the outside of the pipe 11 and connected to a plurality of buffer ribs 14 extending from the pipe 11 and radially outward, and the first protrusions adjacent to each other; A plastic inner cylinder (12) comprising fitting grooves (16) formed between (15);

A soft outer cylinder 13 formed integrally with the outer side of the inner cylinder 12 and including a plurality of second protrusions 17 which are in close contact with the fitting groove 16 in one-to-one correspondence in the axial direction;

When the inner cylinder 12 and the outer cylinder 13 are coaxially arranged, the first protrusion 15 and the second protrusion 17 of the first protrusion 15 and the second protrusion 17 are positioned at the inlet of the fitting groove 16. An intermediate layer 21 which connects the ends to each other;

Including;

When an external impact is applied to the outer cylinder 13, the intermediate layer 21 is broken and the second protrusion 17 is forcibly inserted into the fitting groove 16, and the frictional resistance is continuously provided during the insertion process. Shock is alleviated,

Guardrail rotating body structure characterized in that.
The method of claim 8,

The inner cylinder 12, the guardrail rotating body structure further comprises a shock-absorbing synthetic resin foam (22) filled in the fitting groove (16).
The method of claim 8,

The intermediate layer 21 is:

The ends of the first and second protrusions 15 and 17 are one layer in contact with the inner and outer surfaces, respectively; or,

A line connecting the edge-to-edge contact of each end to extend along the ends of the first and second protrusions 15 and 17;

Guard rail rotating body structure, characterized in that.
The method of claim 9,

Guard foam rotating body structure, characterized in that the foam 22 is a conventional polyethylene molded foam.
The method of claim 8,

The fitting groove 16, including a friction protrusion 23 formed on the inner wall;

Guardrail rotating body structure characterized in that.